You can buy levonorgestrel morning-after pills over the counter without a prescription in most drugstores, pharmacies, and superstores. These types of morning-after pills work best when you take them within 72 hours (3 days) after unprotected sex, but you can take them up to five days after.

What happens if you take levonorgestrel after 72 hours?

How long does the morning after pill stay effective? The morning after pill is only effective after unprotected sex. If you have unprotected sex at any time after taking Levonorgestrel or ellaOne, you can become pregnant. Neither form of morning after pill is intended to be used as a regular form of contraception.

How effective is the morning after pill after 4 days?

Taking the morning-after pill — emergency contraception — more than five days after unprotected vaginal intercourse won't have any effect. Emergency contraception — the morning-after pill — is effective if started within 120 hours, or five days. The sooner emergency contraception is started, the better it works.